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ABB S202-D20 — 2-Pole MCB (DIN Rail)

S202-D20 Miniature Circuit Breaker, 20A, 2-Pole, Curve D, 6

MPNS202-D20

ABB S202-D20, miniature circuit breaker, 20 A, 2-pole, Trip Curve D, 480Y/277 VAC, 6 kA interrupting capacity, DIN rail mount.

$13.97Ref. price · indicative, final on quote
ABB S202-D20 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

S202-D20 — Specifications
ParameterValue
Amps20
TypeTrip Curve D
Poles2
MountingDIN Rail
Volts AC277
Breaking capacity6 kA

Product details

For most branch circuits in a distribution board fed by a transformer under 150 kVA, that's adequate headroom.

The 2-pole footprint is two module widths (approx. 36 mm) — account for that in your enclosure fill factor and gland-plate layout. No additional mounting hardware or backplate clearance needed. The 480Y/277 VAC rating is line-to-line on a wye secondary. The voltage rating is a maximum, not a requirement.

Comparison with the S202M-C20

The closest functional peer is the S202M-C20 — same 20 A, same 2-pole DIN-rail footprint, same 6 kA interrupting rating at 277 VAC. The only difference is the trip curve. If the existing panel was specified around an S202M-C20, the S202-D20 will physically drop into the same DIN rail slot and wire identically. The swap is electrically valid only if the load's inrush profile suits the D curve — motors, transformers, or high-surge loads are fine; resistive or general-purpose branch circuits should stay on the C curve to maintain coordination.

Frequently asked questions

Will the S202-D20 replace an S202M-C20 in an existing panel?

Yes, mechanically — same DIN rail mount, same 2-pole width, same wire terminals. The trip curve differs (D vs C), so confirm the load's inrush characteristic before swapping. For motor or transformer loads, the D curve is often the better fit.

MPN
S202-D20